Always helpful Daniel

Does it matter which slot I have the RAM in?



Tim's red iPhone 

> On 29 Oct 2020, at 9:12 pm, Daniel Kerr <dan...@macwizardry.com.au> wrote:
> 
> Hi Tim
> 
> When you removed and replaced the RAM, did you put it all back or test it 
> separately?
> That would be one check, is just run it on one stick of RAM at a time. It 
> will be slow, but this can narrow down if a stick is faulty.
> 
> Also, you can check the drive as well to ensure that’s ok.
> I recommend the following SMART Utility. (You can run it in Shareware mode)
> https://www.volitans-software.com/apps/smart-utility/
> This will check the drives and advise is “Passed” (green), “Failing” (orange) 
> or “Failed” (red). It works with Fusion Drives as well and will test both HDD 
> and SSD separately.
> I’ve used it to find faulty drives even before Apple Disk Utility finds them. 
> So it’s a good little tool.
> 
> That would be my first things to try anyway, just to rule out a stick of RAM 
> and drive is ok.
> Also try an SMC reset and PRAM reset. (I have steps on my FAQ page of my 
> website if you’re not familiar with that.
> 
> Try those and see how you go.
> If no success, and seeing you’re up Duncraig way I’d recommend MacWorx 
> Joondalup. (Delage Street, Joondalup) - www.macworx.com.au
> 
> Hope something there helps.
> Kind regards
> Daniel
> 
>  Sent from my iPhone 12 Pro 
> 
> ---
> Daniel Kerr
> MacWizardry
> 
> Phone: 0414 795 960
> Email: <daniel AT macwizardry.com.au>
> Web:   <http://www.macwizardry.com.au>
> 
> 
> **For everything Apple**
> 
> NOTE: Any information provided in this email may be my personal opinion and 
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> 
>> On 29 Oct 2020, at 8:39 pm, Tim Law <t...@peoplehelp.com.au> wrote:
>> 
>> Hello folks.
>> 
>> I have an unhappy iMac (Retina 5K, 27-inch, 2017)
>> 40Gb RAM
>> 10.15.7
>> 
>> 
>> Problem is random restarts.
>> First symptom is the mouse freezes then about 30 seconds later the computer 
>> turns off and restarts.  This happens enough to be very annoying, and has 
>> occurred whilst I was drafting this message. 
>> 
>> The problem first occurred after I had transported the computer, screen 
>> down, on the seat of my car. No physical external damage is apparent. 
>> 
>> 
>> Problem does occur in Safe Boot mode, though not as frequently as in normal 
>> mode. 
>> 
>> EtreCheck shows nothing out of order
>> Rebooting into recovery mode and running both Disk Utility and reload latest 
>> operating system have been done. 
>> 
>> *** MCA Error Report ***
>> CPU Machine Check Architecture Error Dump (CPU: Intel(R) Core(TM) i5-7500 
>> CPU @ 3.40GHz, CPUID: 0x906E9)
>> CATERR detected! No MCA data found.
>> 
>> 
>> I had assumed it was a hardware problem triggered by moving the machine but 
>> nothing is showing up in any errors that I have seen.  I have removed and 
>> replaced the RAM.   When running, it functions normally as expected. 
>> 
>> Any thoughts on what else I could do before taking it to the doctor?
>> Which doctor is recommended. 
>> I live in Duncraig area. 
>> 
>> 
>> 
>> Thanks
>> 
>> 
>> 
>> 
>> 
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